About: http://webisa.webdatacommons.org/51594579

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The tubes 80, 82, 84, 86, and 88 may be formed from steel, aluminum, a metal alloy, or other suitable material (e.g., plastic, fiberglass, etc.).
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com